文献类型：期刊文献

英文题名：Lignin-containing hydrogel matrices with enhanced adhesion and toughness for all-hydrogel supercapacitors

作者：Wang, Dingkun[1,2,3] Yang, Fusheng[1,2] Cong, Lulu[4] Feng, Wanglong[1,2] Wang, Chunpeng[1,2,3] Chu, Fuxiang[1,2,3] Nan, Jingya[1,2] Chen, Riqing[1,2]

第一作者：Wang, Dingkun

通信作者：Nan, JY[1];Chen, RQ[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Jiangsu, Peoples R China;[4]Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China

年份：2022

卷号：450

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20222912386154);Scopus(收录号：2-s2.0-85134354167);WOS:【SCI-EXPANDED(收录号:WOS:000830812300002)】；

基金：We acknowledge the support from the Special Funds for the Basic Research and Development Program in the Central Non-profit Research Institutes of China (CAFYBB2020GA001) and the Jiangsu Province Biomass Energy and Material Laboratory (JSBEM-S-202102) .

语种：英文

外文关键词：Lignin; Hydrogel matrix; Adhesion; Toughness; All-hydrogel supercapacitors

摘要：Flexible supercapacitors are promising energy storage devices benefitting from their portability and long cycle life. However, the weak interfacial adhesion between contiguous layers of flexible supercapacitors limits their practical applications. Here, a hydrogel matrix by integrating Ag-Lignin nanoparticles into polyacrylamide network is reported. Due to the unique interwoven-microfibrils structure and non-covalent interactions, the obtained hydrogel matrix presents largely enhanced adhesion and mechanical toughness. The assembled all-hydrogel supercapacitor based on the hydrogel matrix has robust interfaces and shows high specific capacitance (298.6 F g(-1) at 10 mV s(-1)), outstanding rate performance, delivering high energy density of 13.7 Wh kg(-1) and high capacitance retention of 89.9% after 10,000 cycles. Remarkably, the all-polymer device shows superior capacitance retention after mechanical deformations of 5000 cycles without slippage happens between contig-uous layers. This study proposes an effective approach to improving the interfacial adhesion in integrated supercapacitors and extending the application scope of flexible supercapacitors.